Merge pull request #132 from ers35/radiobutton

Add radiobutton

objects/radiobutton.lua

@@ -0,0 +1,466 @@
+--[[------------------------------------------------
+	-- Love Frames - A GUI library for LOVE --
+	-- Copyright (c) 2012-2014 Kenny Shields --
+--]]------------------------------------------------
+
+-- radiobutton object
+local newobject = loveframes.NewObject("radiobutton", "loveframes_object_radiobutton", true)
+
+--[[---------------------------------------------------------
+	- func: initialize()
+	- desc: initializes the object
+--]]---------------------------------------------------------
+function newobject:initialize()
+
+	self.type = "radiobutton"
+	self.width = 0
+	self.height = 0
+	self.boxwidth = 20
+	self.boxheight = 20
+	self.font = loveframes.basicfont
+	self.checked = false
+	self.lastvalue = false
+	self.internal = false
+	self.down = true
+	self.enabled = true
+	self.internals = {}
+	self.OnChanged = function () end
+	self.group = {}
+
+end
+
+--[[---------------------------------------------------------
+	- func: update(deltatime)
+	- desc: updates the object
+--]]---------------------------------------------------------
+function newobject:update(dt)
+	
+	local state = loveframes.state
+	local selfstate = self.state
+	
+	if state ~= selfstate then
+		return
+	end
+	
+	local visible = self.visible
+	local alwaysupdate = self.alwaysupdate
+	
+	if not visible then
+		if not alwaysupdate then
+			return
+		end
+	end
+	
+	self:CheckHover()
+	
+	local hover = self.hover
+	local internals = self.internals
+	local boxwidth = self.boxwidth
+	local boxheight = self.boxheight
+	local parent = self.parent
+	local base = loveframes.base
+	local update = self.Update
+	
+	if not hover then
+		self.down = false
+	else
+		if loveframes.downobject == self then
+			self.down = true
+		end
+	end
+	
+	if not self.down and loveframes.downobject == self then
+		self.hover = true
+	end
+	
+	-- move to parent if there is a parent
+	if parent ~= base and parent.type ~= "list" then
+		self.x = self.parent.x + self.staticx
+		self.y = self.parent.y + self.staticy
+	end
+	
+	if internals[1] then
+		self.width = boxwidth + 5 + internals[1].width
+		if internals[1].height == boxheight then
+			self.height = boxheight
+		else
+			if internals[1].height > boxheight then
+				self.height = internals[1].height
+			else
+				self.height = boxheight
+			end
+		end
+	else
+		self.width = boxwidth
+		self.height = boxheight
+	end
+	
+	for k, v in ipairs(internals) do
+		v:update(dt)
+	end
+	
+	if update then
+		update(self, dt)
+	end
+
+end
+
+--[[---------------------------------------------------------
+	- func: draw()
+	- desc: draws the object
+--]]---------------------------------------------------------
+function newobject:draw()
+	
+	local state = loveframes.state
+	local selfstate = self.state
+	
+	if state ~= selfstate then
+		return
+	end
+	
+	local visible = self.visible
+	
+	if not visible then
+		return
+	end
+
+	local skins = loveframes.skins.available
+	local skinindex = loveframes.config["ACTIVESKIN"]
+	local defaultskin = loveframes.config["DEFAULTSKIN"]
+	local selfskin = self.skin
+	local skin = skins[selfskin] or skins[skinindex]
+	local drawfunc = skin.DrawRadioButton or skins[defaultskin].DrawRadioButton
+	local draw = self.Draw
+	local internals = self.internals
+	local drawcount = loveframes.drawcount
+	
+	-- set the object's draw order
+	self:SetDrawOrder()
+		
+	if draw then
+		draw(self)
+	else
+		drawfunc(self)
+	end
+	
+	for k, v in ipairs(internals) do
+		v:draw()
+	end
+	
+end
+
+--[[---------------------------------------------------------
+	- func: mousepressed(x, y, button)
+	- desc: called when the player presses a mouse button
+--]]---------------------------------------------------------
+function newobject:mousepressed(x, y, button)
+
+	local state = loveframes.state
+	local selfstate = self.state
+	
+	if state ~= selfstate then
+		return
+	end
+	
+	local visible = self.visible
+	
+	if not visible then
+		return
+	end
+	
+	local hover = self.hover
+	
+	if hover and button == "l" then
+		local baseparent = self:GetBaseParent()
+		if baseparent and baseparent.type == "frame" then
+			baseparent:MakeTop()
+		end
+		self.down = true
+		loveframes.downobject = self
+	end
+	
+end
+
+--[[---------------------------------------------------------
+	- func: mousereleased(x, y, button)
+	- desc: called when the player releases a mouse button
+--]]---------------------------------------------------------
+function newobject:mousereleased(x, y, button)
+	
+	if loveframes.state ~= self.state then
+		return
+	end
+	
+	if not self.visible then
+		return
+	end
+	
+	if self.hover and self.down and self.enabled and button == "l" then
+		if not self.checked then
+			-- a radio button can only be unchecked by checking another radio button
+			self:SetChecked(true)
+		end
+	end
+		
+end
+
+--[[---------------------------------------------------------
+	- func: SetText(text)
+	- desc: sets the object's text
+--]]---------------------------------------------------------
+function newobject:SetText(text)
+
+	local boxwidth = self.boxwidth
+	local boxheight = self.boxheight
+	
+	if text ~= "" then
+		self.internals = {}
+		local textobject = loveframes.Create("text")
+		local skin = loveframes.util.GetActiveSkin()
+		if not skin then
+			skin = loveframes.config["DEFAULTSKIN"]
+		end
+		local directives = skin.directives
+		if directives then
+			local default_color = directives.radiobutton_text_default_color
+			local default_shadowcolor = directives.radiobutton_text_default_shadowcolor
+			local default_font = directives.radiobutton_text_default_font
+			if default_color then
+				textobject.defaultcolor = default_color
+			end
+			if default_shadowcolor then
+				textobject.shadowcolor = default_shadowcolor
+			end
+			if default_font then
+				self.font = default_font
+			end
+		end
+		textobject:Remove()
+		textobject.parent = self
+		textobject.state = self.state
+		textobject.collide = false
+		textobject:SetFont(self.font)
+		textobject:SetText(text)
+		textobject.Update = function(object, dt)
+			if object.height > boxheight then
+				object:SetPos(boxwidth + 5, 0)
+			else
+				object:SetPos(boxwidth + 5, boxheight/2 - object.height/2)
+			end
+		end
+		table.insert(self.internals, textobject)
+	else
+		self.width = boxwidth
+		self.height = boxheight
+		self.internals = {}
+	end
+	
+	return self
+	
+end
+
+--[[---------------------------------------------------------
+	- func: GetText()
+	- desc: gets the object's text
+--]]---------------------------------------------------------
+function newobject:GetText()
+
+	local internals = self.internals
+	local text = internals[1]
+	
+	if text then
+		return text.text
+	else
+		return false
+	end
+	
+end
+
+--[[---------------------------------------------------------
+	- func: SetSize(width, height, r1, r2)
+	- desc: sets the object's size
+--]]---------------------------------------------------------
+function newobject:SetSize(width, height, r1, r2)
+
+	if r1 then
+		self.boxwidth = self.parent.width * width
+	else
+		self.boxwidth = width
+	end
+	
+	if r2 then
+		self.boxheight = self.parent.height * height
+	else
+		self.boxheight = height
+	end
+	
+	return self
+	
+end
+
+--[[---------------------------------------------------------
+	- func: SetWidth(width, relative)
+	- desc: sets the object's width
+--]]---------------------------------------------------------
+function newobject:SetWidth(width, relative)
+
+	if relative then
+		self.boxwidth = self.parent.width * width
+	else
+		self.boxwidth = width
+	end
+	
+	return self
+	
+end
+
+--[[---------------------------------------------------------
+	- func: SetHeight(height, relative)
+	- desc: sets the object's height
+--]]---------------------------------------------------------
+function newobject:SetHeight(height, relative)
+
+	if relative then
+		self.boxheight = self.parent.height * height
+	else
+		self.boxheight = height
+	end
+	
+	return self
+	
+end
+
+--[[---------------------------------------------------------
+	- func: SetChecked(bool)
+	- desc: sets whether the object is checked or not
+--]]---------------------------------------------------------
+function newobject:SetChecked(checked)
+
+	if self.checked ~= checked then
+		self.checked = checked
+		self:OnChanged(checked)
+	end
+
+	if checked then
+		for _, button in pairs(self.group) do
+			if button ~= self and button.checked then
+				button:SetChecked(false)
+			end
+		end
+	end
+	
+	return self
+	
+end
+
+--[[---------------------------------------------------------
+	- func: GetChecked()
+	- desc: gets whether the object is checked or not
+--]]---------------------------------------------------------
+function newobject:GetChecked()
+
+	return self.checked
+	
+end
+
+--[[---------------------------------------------------------
+	- func: SetGroup()
+	- desc: set the object's group. only one radio button in a 
+					group is checked at a time.
+--]]---------------------------------------------------------
+function newobject:SetGroup(group)
+	
+	self.group = group
+	self.group[self] = self
+	
+end
+
+--[[---------------------------------------------------------
+	- func: GetGroup()
+	- desc: gets the object's group
+--]]---------------------------------------------------------
+function newobject:GetGroup(group)
+
+	return self.group
+	
+end
+
+--[[---------------------------------------------------------
+	- func: SetFont(font)
+	- desc: sets the font of the object's text
+--]]---------------------------------------------------------
+function newobject:SetFont(font)
+
+	local internals = self.internals
+	local text = internals[1]
+	
+	self.font = font
+	
+	if text then
+		text:SetFont(font)
+	end
+	
+	return self
+	
+end
+
+--[[---------------------------------------------------------
+	- func: newobject:GetFont()
+	- desc: gets the font of the object's text
+--]]---------------------------------------------------------
+function newobject:GetFont()
+
+	return self.font
+
+end
+
+--[[---------------------------------------------------------
+	- func: newobject:GetBoxHeight()
+	- desc: gets the object's box size
+--]]---------------------------------------------------------
+function newobject:GetBoxSize()
+
+	return self.boxwidth, self.boxheight
+	
+end
+
+--[[---------------------------------------------------------
+	- func: newobject:GetBoxWidth()
+	- desc: gets the object's box width
+--]]---------------------------------------------------------
+function newobject:GetBoxWidth()
+
+	return self.boxwidth
+	
+end
+
+--[[---------------------------------------------------------
+	- func: newobject:GetBoxHeight()
+	- desc: gets the object's box height
+--]]---------------------------------------------------------
+function newobject:GetBoxHeight()
+
+	return self.boxheight
+	
+end
+
+--[[---------------------------------------------------------
+	- func: SetClickable(bool)
+	- desc: sets whether or not the object is enabled
+--]]---------------------------------------------------------
+function newobject:SetEnabled(bool)
+
+	self.enabled = bool
+	return self
+	
+end
+
+--[[---------------------------------------------------------
+	- func: GetEnabled()
+	- desc: gets whether or not the object is enabled
+--]]---------------------------------------------------------
+function newobject:GetEnabled()
+
+	return self.enabled
+	
+end

skins/Blue/skin.lua

@@ -103,6 +103,11 @@ skin.controls.checkbox_body_color                   = {255, 255, 255, 255}
 skin.controls.checkbox_check_color                  = {128, 204, 255, 255}
 skin.controls.checkbox_text_font                    = smallfont
 
+-- radiobutton
+skin.controls.radiobutton_body_color                   = {255, 255, 255, 255}
+skin.controls.radiobutton_check_color                  = {128, 204, 255, 255}
+skin.controls.radiobutton_text_font                    = smallfont
+
 -- collapsiblecategory
 skin.controls.collapsiblecategory_text_color        = {255, 255, 255, 255}
 
@@ -1315,6 +1320,46 @@ function skin.DrawCheckBox(object)
 	
 end
 
+--[[---------------------------------------------------------
+	- func: skin.DrawCheckBox(object)
+	- desc: draws the radio button object
+--]]---------------------------------------------------------
+function skin.DrawRadioButton(object)
+	
+	local skin = object:GetSkin()
+	local x = object:GetX()
+	local y = object:GetY()
+	local width = object:GetBoxWidth()
+	local height = object:GetBoxHeight()
+	local checked = object:GetChecked()
+	local hover = object:GetHover()
+	local bodycolor = skin.controls.radiobutton_body_color
+	local checkcolor = skin.controls.radiobutton_check_color
+	
+	--~ love.graphics.setColor(bodycolor)
+	love.graphics.setColor(bordercolor)
+	--~ love.graphics.rectangle("fill", x, y, width, height)
+	love.graphics.circle("line", x + 10, y + 9, 10, 15)
+	
+	--~ love.graphics.setColor(bordercolor)
+	--~ skin.OutlinedRectangle(x, y, width, height)
+	
+	if checked then
+		local image = skin.images["circle-fill.png"]
+		love.graphics.setColor(255, 255, 255, 255)
+		-- FIXME: This does not blend as intended.
+		-- There are gray pixels on a white background.
+		love.graphics.setBlendMode("alpha")
+		love.graphics.draw(image, x + 4, y + 4)
+	end
+	
+	if hover then
+		love.graphics.setColor(bordercolor)
+		skin.OutlinedRectangle(x + 4, y + 4, width - 8, height - 8)
+	end
+	
+end
+
 --[[---------------------------------------------------------
 	- func: skin.DrawCollapsibleCategory(object)
 	- desc: draws the collapsible category object
@@ -1829,4 +1874,4 @@ function skin.DrawTreeNodeButton(object)
 end
 
 -- register the skin
-loveframes.skins.Register(skin)
+loveframes.skins.Register(skin)